LTC1059

PRODUCTION

High Performance Switched Capacitor Universal Filter

Data Sheet Product Selection Table
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Overview

  • All Filter Parameters Guaranteed over Temperature
  • Wide Center Frequency Range (0.1Hz to 40kHz)
  • Low Noise Wide Dynamic Range
  • Guaranteed Operation for ±2.37V and ±5V Supply
  • Low Power Consumption
  • Guaranteed Clock-to-Center Frequency Accuracy of 0.8% (LTC1059A)
  • Guaranteed Low Offset Voltages over Temperature
  • Very Low Center Frequency and Q Tempco
  • Clock Input T2L or CMOS Compatible
  • Separate Highpass (or Notch or Allpass), Bandpass, Lowpass Outputs

The LTC1059 consists of a general purpose, high performance, active filter building block and an uncommitted op amp. The filter building block together with an external clock and 2 to 5 resistors can produce various 2nd order functions which are available at its three output pins. Two out of three always provide lowpass and bandpass functions while the third output pin can produce notch or highpass or allpass. The center frequency of these functions can be tuned from 0.1Hz to 40kHz and is dependent on an external clock or an external clock and a resistor ratio. The filter can handle input frequencies up to 100kHz. The uncommitted op amp can be used to obtain additional allpass and notch functions, for gain adjustment or for cascading techniques.

Higher than 2nd order filter functions can be obtained by cascading the LTC1059 with the LTC1060 dual universal filter or the LTC1061 triple universal filter. Any classical filter realization (such as Butterworth, Cauer, Bessel and Chebyshev) can be formed.

The LTC1059 can be operated with single or dual supplies ranging from ±2.37V to ±8V (or 4.74V to 16V single supply).

The LTC1059 is manufactured by using an enhanced LTCMOS™ silicon gate process.

Applications

  • Sinewave Oscillators
  • Sweepable Bandpass/Notch Filters
  • Full Audio Frequency Filters
  • Tracking Filters
LTC1059
High Performance Switched Capacitor Universal Filter
Wide Range 2nd Order Bandpass/Notch Filter with Q = 10 Center Frequency and Q Error Product Package 1
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Documentation

Data Sheet 1

Reliability Data 1

Application Note 2

Data Sheet

This is the most up-to-date revision of the Data Sheet.

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Software Resources

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Hardware Ecosystem

Parts Product Life Cycle Description
Oscillators 2
LTC6900
PRODUCTION Low Power, 1kHz to 20MHz Resistor Set SOT-23 Oscillator
LTC6930-X.XX
32.768kHz to 8.192MHz Precision µPower Oscillators
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Latest Discussions

2 Years Ago
Regarding the Filter_LTC1059
4 Years Ago
Tunable Notch Filter for audible frequency
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